HBM All Guns

All guns means picking up one of each different weapon in the game and filling up the hideout. Exceptions to this are the WWI Pistol and Custom 1911 which are not collected as they don't appear in the hideout nor in the weapon select menu and the Nailer, which is collected even though it doesn't appear in the hideout as it does appear in the weapon select menu. Overall there are about 20 different guns to be collected.

Run is done on Pro difficulty and gets Silent Assassin rating on each map.

For most large guns I use the detonator glitch, which causes the NPCs to be unable to see the weapon in my left hand as long as I have the detonator in my right hand. I don't know why it works, just accept it.